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  • 1995-1999  (8)
  • 1975-1979  (1)
  • 1999  (8)
  • 1978  (1)
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  • 1995-1999  (8)
  • 1975-1979  (1)
Year
Language
  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Inc
    Wound repair and regeneration 7 (1999), S. 0 
    ISSN: 1524-475X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The purpose of this meta-analysis was to quantify the effect of electrical stimulation on chronic wound healing. Fifteen studies, which included 24 electrical stimulation samples and 15 control samples, were analyzed. The average rate of healing per week was calculated for the electrical stimulation and control samples. Ninety-five percentage confidence intervals were also calculated. The samples were then grouped by type of electrical stimulation device and chronic wound and reanalyzed. Rate of healing per week was 22% for electrical stimulation samples and 9% for control samples. The net effect of electrical stimulation was 13% per week, an increase of 144% over the control rate. The 95% confidence intervals of the electrical stimulation (18–26%) and control samples (3.8–14%) did not overlap. Electrical stimulation was most effective on pressure ulcers (net effect = 13%). Findings regarding the relative effectiveness of different types of electrical stimulation device were inconclusive. Although electrical stimulation produces a substantial improvement in the healing of chronic wounds, further research is needed to identify which electrical stimulation devices are most effective and which wounds respond best to this treatment.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Personnel psychology 31 (1978), S. 0 
    ISSN: 1744-6570
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Psychology
    Notes: The thesis of this paper is that many proposed moderators in personnel psychology are probably illusory, having been created solely by belief in the law of small numbers. Evidence is presented that race as a moderator of test validity is one such illusory moderator. In addition, a model for validity generalization is described which, in addition to eliminating the need for criterion-related validity studies under certain circumstances, strongly calls into question the idea that situations moderate test validity, i.e., the traditional doctrine of situational specificity of test validities. Calculations are presented which show that adequate statistical power in moderator research requires much larger sample sizes than have typically been employed. This requirement is illustrated empirically using validity data for the Army Classification Battery for 35 jobs and 21,000 individuals. These analyses show that (1) even when a moderator is generally assumed to be large, large samples are required to gauge its effect reliably and (2) large sample research may show that moderators that appear plausible and important a priori are nonexistent or trivial in magnitude. The practice of pooling across numerous small sample studies to obtain statistical power equivalent to that of large sample studies is recommended. In light of the evidence that many proposed moderators may not exist, the authors hypothesize that the true structure of underlying relationships in personnel psychology is considerably simpler than personnel psychologists have generally imagined it to be.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1744-6570
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Psychology
    Notes: This research showed that the validity of a biodata instrument developed and keyed within a single organization can generalize to other organizations. It also examines a criterion measure-rate of promotional progress-that has not been used extensively in biodata research, but has several characteristics that make its use attractive. The validity of the biodata component of the Manager Profile Record (MPR), developed and keyed within a single organization, as a predictor of rate of managerial progress was cross-validated on a sample of 7,334 managers and staff professionals in 24 organizations. Results indicate the MPR was a valid predictor of rate of promotional progress across all organizations and that validity did not vary greatly across organizations (p= .53, SDp= .05). The MPR was also a valid predictor for both sexes, as well as for managers of all age groups, lengths of company service, and education levels. These findings demonstrate that multiple-firm development and keying of a biodata instrument was not required for generalizable validity, and argue against the hypothesis of situational specificity. Suggestions for developing biodata instruments in single organizations that will generalize to other organizations include careful attention to the validity and reliability of criterion measures and developing validity at the item level.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Personnel psychology 52 (1999), S. 0 
    ISSN: 1744-6570
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Psychology
    Notes: This study uses meta-analysis of an extensive predictive validity data-base to explore the boundary conditions for the validity of. the structured interview as presented by McDaniel, Whetzel, Schmidt, and Maurer (1994). The interview examined here differs from traditional structured interviews in being empirically constructed, administered by telephone, and scored later based on a taped transcript. Despite these and other differences, this nontraditional employment interview was found to have essentially the same level of criterion-related validity for supervisory ratings of job performance reported by McDaniel for other structured employment interviews. These findings suggest that a variety of different approaches to the construction, administration, and scoring of structured employment interviews may lead to comparable levels of validity. We hypothesize that this result obtains because different types of structured interviews all measure to varying degrees constructs with known generalizable validity (e.g., conscientiousness and general mental ability). The interview examined here was also found to be a valid predictor of production records, sales volume, absenteeism, and job tenure.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 71 (1999), S. 1383-1387 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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  • 6
    Publication Date: 2022-07-07
    Description: In this paper, we generalize the nonlocal discrete transparent boundary condition introduced by Schmidt and Deuflhard {[}Comp. Math. Appl. 29 (1995) 53-76{]} and Schmidt and Yevick {[}J. Comput. Phys. 134 (1997) 96-107{]} to propagation methods based on arbitrary Pad\'e approximations to the two-dimensional one-way Helmholtz equation. Our approach leads to a recursive formula for the coefficients appearing in the nonlocal condition which then yields an unconditionally stable propagation method.
    Keywords: ddc:000
    Language: English
    Type: reportzib , doc-type:preprint
    Format: application/postscript
    Format: application/pdf
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  • 7
    Publication Date: 2022-07-07
    Language: English
    Type: article , doc-type:article
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  • 8
    Publication Date: 2022-07-07
    Description: We present nonlocal discrete transparent boundary conditions for a fourth-order wide-angle approximation of the two-dimensional Helmholtz equation. The boundary conditions are exact in the sense that they supply the same discrete solution on a bounded interior domain as would be obtained by considering the problem on the entire unbounded domain with zero boundary conditions at infinity. The proposed algorithm results in an unconditionally stable propagation method. Numerical examples from optics illustrate the efficiency of our approach.
    Keywords: ddc:000
    Language: English
    Type: reportzib , doc-type:preprint
    Format: application/postscript
    Format: application/pdf
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  • 9
    Publication Date: 2022-07-07
    Language: English
    Type: conferenceobject , doc-type:conferenceObject
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